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WO2007013049A1 - Systeme de fermeture et de drainage de plaie - Google Patents

Systeme de fermeture et de drainage de plaie Download PDF

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Publication number
WO2007013049A1
WO2007013049A1 PCT/IL2005/000784 IL2005000784W WO2007013049A1 WO 2007013049 A1 WO2007013049 A1 WO 2007013049A1 IL 2005000784 W IL2005000784 W IL 2005000784W WO 2007013049 A1 WO2007013049 A1 WO 2007013049A1
Authority
WO
WIPO (PCT)
Prior art keywords
vacuum pump
liquids
enclosure
disposable
outlet
Prior art date
Application number
PCT/IL2005/000784
Other languages
English (en)
Inventor
Carmeli Adahan
Original Assignee
Carmeli Adahan
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=35929816&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2007013049(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Carmeli Adahan filed Critical Carmeli Adahan
Priority to JP2008523527A priority Critical patent/JP4970445B2/ja
Priority to ES09165687.6T priority patent/ES2391527T5/es
Priority to EP05762092A priority patent/EP1909863A1/fr
Priority to CA2614794A priority patent/CA2614794C/fr
Priority to PCT/IL2005/000784 priority patent/WO2007013049A1/fr
Priority to US11/989,297 priority patent/US8506554B2/en
Priority to EP09165687.6A priority patent/EP2127690B2/fr
Priority to AU2006273684A priority patent/AU2006273684A1/en
Priority to EP06766170A priority patent/EP1919533A1/fr
Priority to JP2008523532A priority patent/JP2009502301A/ja
Priority to PCT/IL2006/000855 priority patent/WO2007013064A1/fr
Priority to US11/989,285 priority patent/US20090157016A1/en
Priority to CNA2006800271740A priority patent/CN101227937A/zh
Priority to CA002614797A priority patent/CA2614797A1/fr
Publication of WO2007013049A1 publication Critical patent/WO2007013049A1/fr
Priority to US13/917,865 priority patent/US8858534B2/en
Priority to US14/503,700 priority patent/US9248222B2/en
Priority to US14/672,805 priority patent/US20150202355A1/en
Priority to US15/352,971 priority patent/US20170056572A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
    • F04B45/047—Pumps having electric drive
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/60—Containers for suction drainage, adapted to be used with an external suction source
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/71—Suction drainage systems
    • A61M1/72—Cassettes forming partially or totally the fluid circuit
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/71—Suction drainage systems
    • A61M1/73—Suction drainage systems comprising sensors or indicators for physical values
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/71—Suction drainage systems
    • A61M1/73—Suction drainage systems comprising sensors or indicators for physical values
    • A61M1/732—Visual indicating means for vacuum pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/71—Suction drainage systems
    • A61M1/74—Suction control
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/80—Suction pumps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/80—Suction pumps
    • A61M1/82—Membrane pumps, e.g. bulbs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
    • A61M1/96—Suction control thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
    • A61M1/96—Suction control thereof
    • A61M1/962—Suction control thereof having pumping means on the suction site, e.g. miniature pump on dressing or dressing capable of exerting suction
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
    • A61M1/96—Suction control thereof
    • A61M1/964—Suction control thereof having venting means on or near the dressing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/04—Pumps having electric drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/22—Arrangements for enabling ready assembly or disassembly
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/71—Suction drainage systems
    • A61M1/74—Suction control
    • A61M1/75—Intermittent or pulsating suction
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/12—General characteristics of the apparatus with interchangeable cassettes forming partially or totally the fluid circuit
    • A61M2205/121—General characteristics of the apparatus with interchangeable cassettes forming partially or totally the fluid circuit interface between cassette and base
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A61M2205/3344—Measuring or controlling pressure at the body treatment site

Definitions

  • This invention relates generally to wound healing, and more specifically to healing of wounds by negative pressure drainage.
  • Negative pressure applied to a wound enhances drainage of fluids or exudate from the wound and promotes tissue growth and wound healing. This method of healing (known as "cupping") was exercised since the times of ancient Greek physicians until the 19th century.
  • WO 96/05873 describes a therapeutic apparatus for stimulating healing of wounds.
  • the apparatus comprises a porous foamed pad which is sealed on the wound and connected by a tube to an inlet of a canister.
  • a vacuum pump is connected to an outlet of the canister.
  • a bacterial filter positioned over the outlet of the canister protects the vacuum pump from contamination by wound drainage fluids sucked into the canister.
  • the pump, the canister and control circuitry are disposed in a case.
  • WO 97/18007 discloses a portable wound treatment apparatus using a similar arrangement of a porous pad, canister and vacuum pump.
  • the canister and the pump are in one housing which accommodates also the control circuitry and is wearable on a harness or a belt.
  • US 6,648,862 describes a portable vacuum desiccator using a similar arrangement as above, the canister being formed as a cartridge containing a trapping agent (desiccator).
  • the vacuum pump and the canister may be integrated and detachable from the pump motor and circuitry.
  • the wound exudate is collected in a rigid canister, which must be large enough to prevent it from overflowing, and thus it is bulky and an inconvenient burden for ambulatory patients, who carry a portable system with them.
  • Conventional wound drainage systems utilize an air tight seal of the wound, which is helpful in obtaining and maintaining negative pressure, but requires a pressure relief or bleed valve to produce the pressure cycling desirable to obtain accelerated wound closure, as described in WO 96/05873.
  • a sealed wound dressing or enclosure when under negative pressure, will promote migration of the exudate toward the negative pressure source, through the connecting tube, which may occlude, should the exudate coagulate.
  • an enclosure for draining an open wound from liquids exuded therefrom.
  • the enclosure is attachable to the wound circumference so as to define a confined volume, and has an outlet, for example formed as a nipple, connectable by means of a tube to an inlet of a vacuum pump so that negative pressure may be created in said confined volume.
  • One or more bleeding holes are provided in the enclosure or adjacent to its outlet such that ambient air can enter the tube and flow together with the exuded liquids when negative pressure is present. Ambient pressure may be restored in the confined volume when the vacuum pump is not operating.
  • the bleeding hole in the enclosure may be a calibrated orifice or other flow restrictors providing for controlled flow of ambient air into the enclosure or into its outlet.
  • a hole plugged with open cell foam or an open pore sintered metal plug which restrict the flow, but are not susceptible to plugging as is a small orifice.
  • the bleeding hole renders the wound closure vented or non-airtight, as distinguishable from conventional wound closures.
  • the flow of air from the bleeding hole in the wound closure in response to the negative pressure created by the vacuum pump, facilitates the removal of exudate, which might otherwise coagulate, dry-up and occlude the tubing.
  • a method for draining an open wound from liquids exuded therefrom includes: - providing an enclosure and sealing it to the wound circumference so as to define a confined volume,
  • the method is characterized in that the confined volume is connected to an inlet of the vacuum pump and the waste container is connected to an outlet of the vacuum pump such that the drained liquids flow through said vacuum pump.
  • the method may include employment of an enclosure with bleeding orifices so that ambient air is allowed to enter the tube and flow together with the drained exuded liquids.
  • a vacuum system for practicing the above method.
  • the vacuum system may use a totally disposable vacuum pump, together with a waste collection bag, as disclosed in WO03016719.
  • the vacuum pump is a two-chambered diaphragm pump adapted for pumping gases and liquids and/or any combination thereof.
  • the vacuum pump is capable of pumping air and fluid which enter its inlet port, to a waste bag attached to its outlet port.
  • the waste bag is vented to the atmosphere, such that it collects only the fluids which enter it.
  • the vacuum system may be adapted to be carried by an ambulatory patient.
  • a disposable assembly for draining an open wound from liquids exuded therefrom.
  • the assembly comprises an enclosure attachable to the wound circumference so as to define a confined volume, a vacuum pump unit connected to the enclosure so that negative pressure may be created in the confined volume, and a waste container connected to the vacuum pump unit.
  • the vacuum pump unit has means for detachably attaching to a drive unit for operating the pump unit.
  • the enclosure is connected to an inlet of the vacuum pump unit and the waste container is connected to an outlet of the vacuum pump unit, such that when the vacuum pump unit is operated the drained liquids flow therethrough.
  • the pump unit and the drive unit are adapted for attaching and detaching by simple hand manipulations.
  • the enclosure may have bleeding holes as described above.
  • the vacuum pump unit is preferably a two-chambered diaphragm pump adapted for pumping gases and liquids and/or any combination thereof.
  • the waste container may contain a porous media adapted to soak up the drained liquids and may be in the form of a collapsible or foldable bag.
  • the drained exuded liquids may then be disposed of together with the disposable assembly. More specifically, the pump unit is disposed of after use, together with the tubing connected to it, as well as the waste bag connected, with its content, and with the wound closure which may be connected to the pump unit via the tube.
  • a vacuum system as described above where the vacuum pump has a drive unit and a control block adapted to power the drive unit so that a predetermined level of negative pressure is maintained in the confined volume.
  • the control block has a sensor for sensing working parameters of the drive unit and means for deriving the level of negative pressure in the confined volume from these working parameters, in order to maintain said predetermined level.
  • the sensor has no fluid connection with the confined volume.
  • the drive unit may comprise a direct current electric motor and the sensor may sense the electric current driving the motor.
  • the same function of negative pressure control may be accomplished by an adjustable torque limiting clutch, placed between the motor output shaft and the pump.
  • the control block may be provided with alarm means to warn the user if the predetermined level of negative pressure is not maintained.
  • the control block with monitoring means is preferably associated with the drive unit which is non-disposable.
  • indirect means are provided for controlling or monitoring the level of negative pressure applied to the wound, without making any direct connection to a vacuum sensor, transducer or gage to any portion of the system, which has the negative pressure applied to it.
  • the indirect negative pressure monitoring and control result from the need to dispose of any portion of the system, which may come in contact with the pumped media, which is likely to be contaminated or infectious. Accordingly, all the disposable components in the system may be relatively low in cost, to promote discarding them after use. Pressure transducers, vacuum gages or sensors, are relatively costly, and thus not considered disposable.
  • Fig. 1 is a schematic sectional view of the vacuum system of the present invention applied on a wound.
  • Fig. 2 shows the disposable portion of the system of Fig. 1.
  • the present invention provides a system and a method of treating and healing of a body wound, by applying a negative pressure to the wound, over an area sufficient to promote migration of epithelial and subcutaneous tissue toward the wound.
  • a vacuum system 10 for draining an open wound from liquids exuded therefrom comprises a wound enclosure 12, a vacuum pump 14, and waste collection bag 31.
  • the wound enclosure 12 is connected by a suction tube 16 to an inlet 11 of the vacuum pump.
  • the waste collection bag 31 is connected to an outlet 22 of the vacuum pump.
  • Suction tube 16 is connected to nipple 38 of the enclosure 12 which covers wound area of the body 34 such that suction of air through tube 16 creates negative pressure in the volume above the wound area of the body 34.
  • a bleeding orifice 35 is provided within the enclosure 12, or adjacent to it as a tube orifice 37, allowing ambient air to flow into and through suction tube 16, rendering enclosure 12 non-air tight, or vented.
  • This feature unlike conventional sealed closures, provides for quick movement of exudate entering suction tube 16, toward the vacuum pump 14, and into the waste bag 31, before it dries up or coagulates and occludes the tube.
  • This feature also provides for introduction of ambient pressure to the wound area of the body 34 whenever the vacuum pump stops pumping, allowing cyclic negative pressure application to the wound, by cycling the vacuum pump on and off alternately.
  • the vacuum pump 14 comprises a pump unit 18 and a drive unit 40 which are detachably attachable to each other, as explained below.
  • the pump unit 18 includes a two-chambered housing 17 and a diaphragm 24 secured to the underside of the two- chambered housing 17 so as to form a working chamber 29.
  • the two-chambered housing 17 has a first chamber 13 with the inlet 11 and a second chamber 21 with an outlet 22.
  • the suction tube 16 is connected to the inlet 11.
  • Two one-way valves 19 and 20 are present at the bottom of the first chamber 13 and the second chamber 21, respectively.
  • a mounting base 23 used to mount the housing 17 to the drive unit 40 by means of a bayonet lock.
  • the diaphragm 24 has an integral rod-shaped drive member 25, which is used for engagement with the drive unit 40.
  • the drive unit 40 includes an electric motor 39, batteries 41 and a control block 50 described below.
  • the shaft of the motor 39 has a crank 27 coupled to a reciprocating rod 26.
  • the rod 26 has a receptacle with a cavity adapted to receive and lock therein the drive member 25.
  • the crank 27 Upon activation of the motor 39, the crank 27 is rotated and reciprocates the receptacle rod 26, causing the diaphragm 24 to expand and contract the working chamber 29.
  • the pump unit 18 pumps air or liquid that passes through the one-way valves 19 and 20. Air and liquids enter the two-chambered housing 17 through the inlet 11 and suction tube 16 which is connected to the patient's wound enclosure 12, for the removal of exudate. Liquids and air enter the first chamber 13, which is under negative pressure when diaphragm 24 reciprocates, driving them past one-way valve 20, into the second chamber 21. The air and liquid which are pumped through outlet 22, enter waste bag 31.
  • the pump's ability to pump air and liquid is enhanced by the flexibility of the diaphragm 24 which allows the diaphragm to yield when encountering heavy loads, such as those present when pumping liquid.
  • This diaphragm flexibility also provides an additional substantial advantage: when the negative pressure in working chamber 29 is high, the diaphragm 24 stretches to allow the reciprocation of the receptacle rod 26 to occur, at minimal burden to the electric motor 39.
  • the waste bag 31 has a vent 15, through which air and gas are discharged to the atmosphere. Accordingly, waste bag 31 will retain only the waste fluids which are pumped into it.
  • the waste bag may contain a porous media 47 adapted to soak up the drained liquids.
  • waste bag 31 is made of thin plastic sheet, which allow it to be folded or collapsed when not full, providing the convenience of having minimal bulk and minimal inconvenience to the patient using or carrying it.
  • the drive unit 40 also includes a control block 50 with control circuits such as cycle control 42, which turns the motor pump on and off alternately, motor voltage and current monitoring and control 43, which controls the negative pressure level produced by the pump unit 18, by controlling the voltage and current which drive motor 39.
  • cycle control 42 which turns the motor pump on and off alternately
  • motor voltage and current monitoring and control 43 which controls the negative pressure level produced by the pump unit 18, by controlling the voltage and current which drive motor 39.
  • the current draw of the motor is directly related to the negative pressure generated by the pump 18. Accordingly, monitoring of the current which the motor 39 draws allows for indirect monitoring of the negative pressure attained by pump 18.
  • a sensor may sense the electric current driving the motor. Since the direct current motor output torque is directly related to the current driving the motor, and since the motor output torque is directly related to the negative pressure the pump 18 produces, monitoring the motor current or controlling it, provide for monitoring and controlling the negative pressure produced by the vacuum pump. Motor current monitoring is only one of the available methods of indirect negative pressure monitoring and controlling. The same function of negative pressure control may be accomplished by an adjustable torque limiting clutch placed between the motor output shaft and the crank 27.
  • the control block 50 also has a negative pressure comparator 44, which compares the desired set negative pressure level obtained by pump 18, and the actual monitored negative pressure level as obtained indirectly from motor voltage and current monitoring and control 43.
  • FIG. 2 shows the disposable portion of the system as an assembly 60, which includes the pump unit 18, the waste bag 31, the connecting tube 16 and the wound enclosure 12, all separated from the drive unit and from the wound area of the body 34.
  • the assembly 60 may be disposed of in its totality after use, and replaced by a new assembly, thus keeping the costly drive unit 40 free from any contamination. It would be obvious to those skilled in the art, that the present invention alleviates the need for cleaning or disinfecting any portion of drive unit 40 after use, or providing protective means, such as filters, to keep contaminants from reaching the costly drive 40.

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Vascular Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Anesthesiology (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • External Artificial Organs (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

L'invention concerne un système à dépression permettant de drainer une plaie ouverte afin d'évacuer les liquides exsudés de celle-ci, comprenant une enceinte hermétique à la circonférence de la plaie, une pompe à vide comportant une unité de pompage jetable que l'on peut fixer à une unité d'entraînement non jetable de manière détachable, et un conteneur de déchets pour la collecte des liquides drainés. L'enceinte possède une sortie connectée par un tube à une entrée de l'unité de pompage et le conteneur de déchets est connecté à une sortie de l'unité de pompage, pour que, lorsque la pompe à vide est actionnée, les liquides drainés s'écoulent à travers la pompe à vide. L'enceinte possède un ou plusieurs trous de purge disposés à travers celle-ci ou bien adjacents à sa sortie pour que l'air ambiant puisse pénétrer dans le tube et s'écouler avec les liquides drainés. L'enceinte et le conteneur de déchets sont jetables de sorte que les liquides drainés ne touchent que les éléments jetables et puissent être éliminés avec tous les éléments jetables.
PCT/IL2005/000784 2005-07-24 2005-07-24 Systeme de fermeture et de drainage de plaie WO2007013049A1 (fr)

Priority Applications (18)

Application Number Priority Date Filing Date Title
JP2008523527A JP4970445B2 (ja) 2005-07-24 2005-07-24 創傷カバー及び排液システム
ES09165687.6T ES2391527T5 (es) 2005-07-24 2005-07-24 Sistema de drenaje y cierre de heridas
EP05762092A EP1909863A1 (fr) 2005-07-24 2005-07-24 Systeme de fermeture et de drainage de plaie
CA2614794A CA2614794C (fr) 2005-07-24 2005-07-24 Systeme de fermeture et de drainage de plaie
PCT/IL2005/000784 WO2007013049A1 (fr) 2005-07-24 2005-07-24 Systeme de fermeture et de drainage de plaie
US11/989,297 US8506554B2 (en) 2005-07-24 2005-07-24 Wound closure and drainage system
EP09165687.6A EP2127690B2 (fr) 2005-07-24 2005-07-24 Système de drainage et de fermeture de plaies
CA002614797A CA2614797A1 (fr) 2005-07-24 2006-07-24 Systeme, procede et kit d'aspiration
EP06766170A EP1919533A1 (fr) 2005-07-24 2006-07-24 Systeme, procede et kit d aspiration
AU2006273684A AU2006273684A1 (en) 2005-07-24 2006-07-24 Suctioning system, method and kit
JP2008523532A JP2009502301A (ja) 2005-07-24 2006-07-24 吸引システム、方法、及びキット
PCT/IL2006/000855 WO2007013064A1 (fr) 2005-07-24 2006-07-24 Systeme, procede et kit d'aspiration
US11/989,285 US20090157016A1 (en) 2005-07-24 2006-07-24 Suctioning system, method and kit
CNA2006800271740A CN101227937A (zh) 2005-07-24 2006-07-24 抽吸系统、方法和工具箱
US13/917,865 US8858534B2 (en) 2005-07-24 2013-06-14 Wound closure and drainage system
US14/503,700 US9248222B2 (en) 2005-07-24 2014-10-01 Wound closure and drainage system
US14/672,805 US20150202355A1 (en) 2005-07-24 2015-03-30 Wound closure and drainage system
US15/352,971 US20170056572A1 (en) 2005-07-24 2016-11-16 Wound closure and drainage system

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US20170056572A1 (en) 2017-03-02
US8858534B2 (en) 2014-10-14
ES2391527T3 (es) 2012-11-27
EP2127690B2 (fr) 2017-06-14
EP2127690A2 (fr) 2009-12-02
US9248222B2 (en) 2016-02-02
JP4970445B2 (ja) 2012-07-04
JP2009502297A (ja) 2009-01-29
US20090264837A1 (en) 2009-10-22
US20150202355A1 (en) 2015-07-23
CA2614794C (fr) 2014-02-18
EP2127690A3 (fr) 2010-03-10
ES2391527T5 (es) 2017-11-02
US20130281986A1 (en) 2013-10-24
CN101227937A (zh) 2008-07-23
US8506554B2 (en) 2013-08-13
CA2614794A1 (fr) 2007-02-01
US20150018787A1 (en) 2015-01-15
EP1909863A1 (fr) 2008-04-16
EP2127690B1 (fr) 2012-06-20

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